Table 2.

H-bonds (distance of 3.2 Å or less is considered) found between the main chain and side chain atoms of the nonapeptides p29, Flu Np, and SEV with the residues of the cleft in the L^d, D^b (5), and K^b (4), respectively

p29	H-2Ld(11,3)	Flu Np	H-2Dd(13,9)	SEV	H-2Kb(18,3)
P1Y N	OH–Y171	P1A  N	OH–Y171	P1F N	OH–Y171
O	OH–Y159	O	OH–Y159		OH–Y7
P2P N		P2S  N	OE2–E63	O	OH–Y159
O		O	NZ–K66	P2A N	OE1–E63
P3N N	OH–Y99	OG	OE2–E63	O	NZ–K66
O	OE1–Q70		OH–Y45	P3P N
P4V N			OH–Y22	O	ND2–N70
O	OH–Y155	P3N  N	OG–S99		OE2–E24
P5N N		OD1	OE1–E9	P5N N	OD1–N70
O			NE2–Q70	P6Y N	OD1–N70
ND2	NE2–Q70	P4E  O	NE2–H155	O	OG–S73
OD1	OE1–Q70	P5N  N	OE1–Q70	OH	O–Y7
OD1	NE2–Q70	ND2	OH–Y156		OE2–E24
P6I  N		OD1	NE2–Q97		OG–S99
O		P6M O	NE1–W73	P8A O	NE1–W147
P7H N		SD	ND1–H155	P9L N	OD2–D77
O	NE1–W147	P7E  O	NE1–W73		OG1–T80
P8N N		OE1	OG–S150	O	OH–Y84
O	NE1–W147	P8T  O	NE1–W147		OG1–T143
P9F N	ND2–N77	P9M O	ND2–N80	OT	NZ–K146
O	NZK146	OT	OH–Y84		OG1–T80
O	OG1–T143		OG1–T143		OD2–D77
O	OH–Y84

Total number of H-bonds involving main chain, side chain atoms are shown in parentheses.